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The new Liebherr rough-terrain cranes are designed for high capacity and safety.

Liebherr has extended its mobile crane product range with an additional series of rough-terrain cranes in the 90-tonne (100 USt) and 100-tonne (110 USt) classes. The Liebherr Rough-Terrain cranes LRT 1090-2.1 and LRT 1100-2.1 will be unveiled to the public at the Conexpo construction machinery trade show in Las Vegas in March 2017. They feature high performance, safety and comfort.

The development of the new generation of Liebherr rough-terrain cranes was preceded by extensive market surveys and analyses into the requirements for modern RT cranes, particularly in the main market of North America. In addition to the capacity of the cranes, their safety, particularly their safety resulting from ease of operation, was one of the main focal points for the development of the new cranes.

The VarioBase® variable support base developed by Liebherr as standard on the new LRT cranes makes an important contribution to enhancing safety. VarioBase® allows each individual outrigger beam to be extended to arbitrary lengths. The crane work is controlled by the load moment limiter within the LICCON controller which calculates the maximum load capacities precisely for the current situation. This prevents accidents by human error during the assembly process and when hoisting loads. VarioBase® also provides greater flexibility on site. As a result of the increased lifting capacities when hoisting over the supports, the crane can hoist loads normally reserved for the next higher crane class.

The new LRT cranes from Liebherr are powerful and robust, have good off-road capability and are also manoeuvrable. Both crane models are powered by a CUMMINS diesel engine which meets all current emissions regulations. The engine develops 194 kW (264 bhp) and supplies a maximum torque of 990 Nm (730 lb-ft). A 6-speed powershift transmission from DANA and large 29.5 R25 tyres guarantee the required off-road capability for the cranes.

The 100-tonne (110 USt) LRT 1100-2.1 has a 50 m (164 ft) telescopic boom with a "Telematik" telescoping system on which the various telescoping sections can be extended independently with a single cylinder. 14 tonnes (30,800 lbs) of counterweights ensure high stability. The lifting capacity of the LRT 1100-2.1 is around 15% higher than that of the 90-tonne (100 USt) model which features 12 tonnes (26,500 lbs) of counterweights. The LRT 1090-2.1 features a 47 m (154 ft) telescopic boom. Its telescoping system consists of a two-stage hydraulic cylinder with a rope extension mechanism.

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